Question
A 5m long cylindrical steel wire with radius 2×10−3m is suspended vertically from a rigid support and carries a bob of mass 100 kg at the other end. If the bob gets snapped, calculate the change in temperature of the wire ignoring radiation losses.
(For the steel wire: Youngs Modulus =2.1×1011Pa; Density =7860kg/m3; Specific heat =420 J/kg-K).